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Re: Gm RVC charging system blues
Posted to Technical Discussion Forum on 3/25/2020

I am not going to be much help here, as this is one I would like to be there to help. I am not a good helper over the webs much. The BCM is in charge of changing which charge mode it is in. I am not sure if aftermarket SI has document numbers but GM Doc ID: 25... Login to read more.